Light bulb



FIG. 1 is an elevated perspective view of the new light bulb.

FIG. 2 is a tilted perspective view of the new light bulb.

FIG. 3 is a side view of the new light bulb.

FIG. 4 is a top view of the new light bulb; and,

FIG. 5 is a bottom view of the new light bulb. 

The ornamental design for a light bulb, as shown. 